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A variable plane makes with the co-ordin...

A variable plane makes with the co-ordinates plane, tetrahedron of contant volume `64 k^3` Then the locus of the centroid of tetrahedron is the surface.

A

`xyz = 6k^3`

B

`xy+yz+zx = 6k^2`

C

`x^2 + y^2 + z^2 = 8k^2`

D

None to these

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KUMAR PRAKASHAN-THREE DIMENSIONAL GEOMETRY-PRACTICE PAPER -11
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  5. The symmetric from of the equation of the line x + y -z = 1 and 2x -3y...

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  6. A variable plane makes with the co-ordinates plane, tetrahedron of con...

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  8. Find the distance of the point (3,-2,1) from the plane 2x-y+2z + 3 = 0...

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  9. Find the values of p so that the lines (1-x)/(3)=(7y-14)/(2p)=(z-3...

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  10. Find the vector and the cartesian equations of the line that passes th...

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  11. Find the shortest distance between the lines (x+1)/(7)=(y+1)/(-6)=(...

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  12. Find the equation of the plane through the line of intersection of the...

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  13. Find the coordinates of the point where the line through (3,--4,-5) an...

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  14. Prove that the lines x=2 (y-1)/(3) = (z-2)/(1) and x = (y-1)/(1) = (z+...

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  15. A line makes the angle alpha, beta , gamma and delta with the diagonal...

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  16. Find the image of the point (1,3,4) in the plane 2x-y +z = -3.

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